【作者】 刘振兴；

【导师】 朱杰； 郑成根；

【作者基本信息】 上海交通大学 ， 电子与通信工程， 2011， 硕士

【摘要】 随着科技的进步与社会的发展,我国将于2015年全面进入数字电视时代。液晶面板电视将取代传统的显像管电视成为数字电视时代中的佼佼者,但是液晶面板在器件物理特性上的原因会造成图像的残影(shadow)、运动模糊(motion blur)等现象,尤其是当画面表现快速运动场景时运动模糊现象会非常突出。为解决液晶电视图像在快速运动中的残影,以及图像模糊闪烁等技术问题,本文提出采用双向预测算法来提升帧率。将基于经验阈值的双向运动估计运动补偿算法应用于帧率倍频处理中,解决提升帧率时的内插帧误差过大,减少块效应和图像空洞的问题。并且提出该算法的硬件架构,用图像序列进行软件仿真,得出主观评价良好的内插帧图像效果。本文正是在上述背景下提出来,主要研究双向运动补偿算法的实现,运动估计器及DDR控制模块的硬件实现架构研究。本文主要工作如下:(1)实现了用双向预测运动估计的算法提升帧率;(2)提出了双向预测的运动估计器的硬件架构;验证奇偶阵列运动估计器的功能;(3)实现了DDR内存的读写功能,测试通过了DDR内存的读写的功能;(4)提出了系统的流水化处理方案,降低硬件开销,并且给出了每个子模块的状态机的逻辑控制转移图;(5)提出了实现系统的硬件架构,设计输入输出接口,以及硬件环境的调试。本文首先介绍运动估计和运动补偿的理论算法,接着阐述实现双向预测运动估计的算法,并且得到软件仿真的实验结果,然后提出基于双向预测运动估计的帧率提升算法的硬件架构,包括运动估计器,DDR存储设备的读写,各层次流水线的架构设计,以及每个子模块的状态机。最后给出帧率提升算法的仿真结果,以及系统基本调试平台的搭建结果。最后本文进行了帧率提升算法的总结和未来的发展趋势。更多还原

【Abstract】 With technology inproving and society developing, our country will totally use digital TV in 2015. LCD Panel will replace the tradional electric image tabe TV, and it may become a super one in the digital TV area. But LCD panel will cause some image shadow, motion blur problems with its physical structure, espsially the image moves so rapidly.To solve the image shadow in rapid moving, and image flick problems. This thesise report an bidirection predict algorithm to up frame which based on experience value. It can reduce the torlance about insert the additional frame, and it can also reduce the block effect and white hole issues. And this thesis also report the hardware architecture for the algorithm,then using image seirial to do software simulation. Concluding a nice comment for the inserting additional frame.This thesis is published in this background, it focus on how to realistic bidirectional motion compensate algorithm. And study the hardware architecture for motion estimate and double frequency. This article focus on some expects below:1:realistic bidirectional predict frame up algorithm2: propose the motion estimate of the hardware architecture for bidirectional predict, verified the function and timing of even-odd array motion estimator;3: realistic the funciton for DDR Ram read and wright,and verified the funtion4: propose the system architecture by using pipeline, it can reduce the hardware cost, and give each module status machine logical control transfer chart.5: To propose the system hardware architecture, design the input and output interace, and the debug hardware environment.This thesis reviewed motion estimate and motion conpensate algorithm, then state the bidirectional predict motion estimate algorithm meanwhile get the test conclution. In Charpter 3 this paper propose the hardware architecture for frame up algorithm which based on bidirectional predict motin estimate, include motion estimate module, DDR read and wright function. In Charpter 4, it presents each module’s pipeline architecture and their status machine. In the last this thesis shows the result of software simulation about frame up algorithm by the test bench.Last but not least this paper predict the future of the frame up algorithm and give its concluetion.更多还原